CCP has issued a statement about problems with the Trinity update for EVE Online (story), saying they have cleared up the issue:

Reykjavik, Iceland - December 6, 2007 -EVE Online: Trinity was released for download at 22:00 GMT on Tuesday, December 5. Shortly after the deployment of the update, CCP became aware of an issue involving the Premium graphics content download whereby a small percentage of our users may have been affected and now need to make repairs to system files. We immediately set to work to identify the cause and resolve it. A new build is now available and is safe for all users to download and install. Users who are running Microsoft Windows versions other than Vista, with multiple hard drives (or multiple partitions on any hard drive) and began downloading the Premium graphics content before 04:00 GMT on Wednesday, December 6, should visit this link and follow the instructions given to correct any potential system issues.